Home / 90,860.84-136,586.49-90,417.97

Finding the Fourth Proportional to 90,860.84, 136,586.49 and 90,417.97

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Solution

The fourth proportional to 90,860.84, 136,586.49 and 90,417.97 is: 135,920.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,860.84 : 136,586.49 = 90,417.97 : x
  2. Step 2: Convert to fraction form
    90,860.84/136,586.49 = 90,417.97/x
  3. Step 3: Cross multiply
    90,860.84x = 136,586.49 × 90,417.97
  4. Step 4: Simplify right side
    90,860.84x = 12,349,872,986.89
  5. Step 5: Solve for x
    x = 12,349,872,986.89/90,860.84
  6. Step 6: Final answer
    x = 135,920.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.